Whether it's an Audi S6, a Volkswagen Passat or a BMW M3, European sedans tend to come from the factory with a heavy front brake bias. This results in the front brakes doing the majority of the work when stopping or slowing the vehicle. StopTech engineers its systems to shift the bias rearward so all four tires can share the workload. This helps to optimize the grip available from all four tires, reducing braking distances.

A shift in brake bias towards the rear of the car also helps improve pedal feel, giving drivers a better sense of how much pedal travel will result in how much brake force. That kind of control inspires pure confidence.

Through research and testing, StopTech engineers also know that vehicle modifications can significantly reduce a factory brake system's performance. Adding wider tires, lowered suspension components, aerodynamic downforce or additional horsepower will all impact braking performance. StopTech designs systems for a wide variety of performance levels, offering a range of rotors and calipers to accommodate various modifications and trim levels on certain makes and models.

StopTech Big Brake Kits and Trophy Big Brake Kits are found on several championship-winning Foreign and Domestic race cars competing in series like Grand-Am Continental Tire Series Grand Sport, SCCA Pro Pirelli World Challenge GT, NASA American Iron Series and a number of different SCCA and NASA national and regional amateur divisions.

StopTech Snapshot: While developing the system for the BMW E9X M3, StopTech engineers found that excessive heat generated under braking actually grew the rotor as much as 2mm. This is partially due to the high curb weight of the vehicle and to the high speeds it is capable of. Because of the rotor expansion allowed by the floating rotor assemblies, there is a bit of pad overlap on these systems when cold.